Fastener



F. S. CARR.

FASTENER.

APPLICATION FILED JAN. 16-. 1920.

Patented Aug. 9, 1921.

Invenio Fked S. (fa/2 2 'rr tics.

FRED S. CARE, OF NEWTON, IVIASSACHUSETTS, ASSIG-NOR TO-CARR'FASTENEB,COMPANY, OF CAMBRIDGE, MASSACHUSETTS, A CORPORATION OF MAINE;

FASTENER.

ssmio.

To all whom it may concern: Be itknown that I, FRED S. CARR, a citi- Zeuof the United States, and a resident of Newton, in the county-of Miclcllesemlcommonwealth. of Massachusetts, have invented an Improvement in.Fasteners, of which the following description, v in connection with theaccompanying drawings, is a'specification, like characters on thedrawings representing like parts. j

This invention pertains to improvements in fasteners of the stud andsocket type. It is among the objects of the invention to provide afastener having superior capacity to withstand, without undesiredseparation of stud and socket, forces likely to result from lateralstrains. r

In the drawings, which show a preferred form of one embodiment of myinvention z- Figure 1 is a view showing two piecesof fabric securedtogether by a fastener shown in dotted lines;

Fig. 2 is a section on the line 22 of Fig. 1;

Fig. 3 shows two pieces of material secured together by a plurality ofsuch fasteners; I

Fig. 4 is a view of the socket shown in Fig. 2 taken from the sidethereof where the stud enters; and

Fig. 5 is a view of the stud.

Referring to the drawings, and to the preferred form of my inventionillustrated, I have provided a fastener including a stud 6 having a headand a neck cooperating with a socket including a casing 7 containing srin means 8. The casin referabl as shown, comprises a disk portionhaving an aperture therethrough into which the headof the stud can bepassed for engagement with the spring jaw means and a flanged- V overrim for holding the spring in the socket. The aperture through the faceof the socket is preferably somewhat larger than the greatest diameterof the head of the stud, and the spring is preferably made to providerelatively abrupt curved portions intersecting at a plurality of pointsthe aperture through the casing so that the neck of the stud will beengaged by a plurality of such points or curved portions. The dlstancebetween adjacent curved portions is preferably such that when subjectedto lateral strain the stud may shift somewhat to enter into semi-lockedrelationship to the spring, the

'volving omission, substitution, alteration and Specification ofLetterslatent. v P te md A 9, 1921, Application filed January 16, 1920.serial n 351,785. v

parts being preferably 'so .proportionedf however, that the stud canshift suficiently to get into a position where it cannot be adjacent theedge of the aperture in the socket- These supporting portions arepreferably so located that the spring can only yield to a point wherethe neck of the stud will become wedged under lateral strain be? tweenthe points of the spring. Sufficient play is preferably provided sothat,-when' the stud is pulled in anygiven direction, the spring pointson the opposite side of the socket may follow the stud and remain insupporting relation thereto.

The socket is preferably made reversible, so that the stud may beentered from either side thereof. In such case the holding power of thefastener against separation under lateral strain may be substantiallythe same whether the studbe entered from one side or the other.This-will ordinarily be the case where the spring portions are'central.i If it is desired to provide a somewhat greater holding power when thestud is entered from one side than when the stud is entered from theother side, then the spring may be located a somewhat out of a planepassing through the center. of the casing, in which case the holdingpower will be greater where the stud is entered from the side'where thespring is near thebase of the face of'the socket than wlilen the stud'isentered'from the opposite s1 e. Y

While I have shown and described a pre-l ferred form of one embodimentof'my invention, it will be understood that changes in-' reversal ofparts, and even changes in the mode of operation, may be made without dcparting from the scope of my invention, which is best defined in thefollowing claims.

Claims.

1. A separable fastener comprising in combination, a'stud having a headand a neck, a socket including a'spring providing a plurality of pointsadapted to engage the stud and haviugbetween them an openinginto whichthe neck of the stud may be drawn, the spring portions at opposite sidesof said opening being adapted to wedge the stud to oppose separation ofstud and socket under forces resultant from lateral strains on stud andsocket, said spring portions being backsupported by adjacent projectionsfrom the socket to'limit the amount which they can yield under strain.

2. A stud andsocket fastener comprising, in combination, a stud having ahead and a neck, and a socket comprising a casing, a

spring somewhat loosely fitting said casing and permitting a limitedamount of shifting of said spring in said casing, means on said casingback-supporting the spring portions engaging said stud and limitingresilient yielding thereof under strain said parts organizedandoperating to wedge the stud between adjacentspring portions whenstrain is exerted laterally on stud and socket and resiliently tosupport that side of the stud away from the portion thereof which iswedged under any given strain.

3. A separable fastener comprising, in combination a stud having a headand a neck, a socket having a plate providing an aperture therethrough,a spring providing a plurality of stud-engaging points intersecting saidaperture and spring-supporting elements projecting from said casingadjacent said aperture.

4. A separable fastener comprising, in combination a studhaving a headand a neck, and a socket including a casing having an aperture thereinanda plurality. of spring points intersecting said aperture for engagement with the neck of the stud, said spring points being spaced apart adistance less than the diameter of the stud and back-supported toprevent separation thereof a distance equal to the diameter of thecooperating portion of the neck of said stud. V

g In testimony whereof, I have signed my name to this specification.

FRED S. CARR.

